They are almost certainly EE's. The color of the chick does not look like any accepted Am color.
The simplist way to tell is the price. if under $5 per chick, almost certain it is an EE. Also, if it was sold as a pullet chick, then it originated from a commercial hatchery making it certain to be an EE. I sometimes sell my black Ams for under $5, but they are straight run, never sexed, and that is a very cheap price for purebred Ams.